Finding the Fourth Proportional to 3,522.76, 5,282.78 and 1,057

Step by Step Solution

1. Step 1: Write the proportion equation
   3,522.76 : 5,282.78 = 1,057 : x
2. Step 2: Convert to fraction form
   3,522.76/5,282.78 = 1,057/x
3. Step 3: Cross multiply
   3,522.76x = 5,282.78 × 1,057
4. Step 4: Simplify right side
   3,522.76x = 5,583,898.46
5. Step 5: Solve for x
   x = 5,583,898.46/3,522.76
6. Step 6: Final answer
   x = 1,585.09